Corporate Governance - Committee Composition

Unitil Corporation has four standing Committees of the Board: the Audit Committee, the Compensation Committee, the Executive Committee, and the Nominating and Governance Committee. The Audit, Compensation and Nominating and Governance Committees are comprised exclusively of Directors who are independent of the Company and of management as defined by the New York Stock Exchange and as required by the Securities and Exchange Commission in Item 407(a) of Regulation S-K of the Securities Act of 1933.